Apologies for being late to the party on this one - did you manage to solve this ? I have water coming into the boot of my C-Max in the same place as you show in this photo. I’ve re-sealed the seams and renewed the rubber boot seal - but still getting water in through this join in the 2 panels. ThanksOk spent a while last night doing some is of the seams but when got up this morning View attachment 130649 looking like my sealing it up failed